Progressive O2

Like O2 table, the apnea interval is increased while breathing interval keeps constant. As a competition, you have to try to get as far as possible. Each lap increases the apnea interval by 5 seconds while breathing interval stays 15 seconds.
When you want to compete with others, select “Ranking” from menu. Your results will be stored online and the ranking is displayed.
Keep in mind that time measurement is a point of honour. Breathing in is measured as – well – breath. Breathing out is measured as apnea time. That’s why you should try to extend exhale as long as possible to extend your apnea time.